Translations missing Portuguese

Hi,

how can I manually translate strings missing in woocommerce? My site is in Portuguese (Brazil) and it says that 100% are translated, however my site is showing several strings in english.
“Shipping costs will be calculated once you have provided your address.” (on cart page)
“reviews for” (on product page)
“your review *” (on product page)
“Your rating” (on product page)

thanks and have a great day